E.g.f.: 1 / (2 - exp(2*(exp(x) - 1))).

A346433

E.g.f.: 1 / (2 - exp(2*(exp(x) - 1))).

Terms

    a(0) =1a(1) =2a(2) =14a(3) =142a(4) =1910a(5) =32094a(6) =647126a(7) =15223198a(8) =409276054a(9) =12378827166a(10) =416006542550

External references